Folding chair



p 1929; A. PROVISOR 1,726,856

FOLDING CHAIR Filed Dec. 7, 1925 Patented Sept. 3, 1929.

UNITED STATES 1,726,856 PATENT OFFICE.

ABRAHAM PBOVISOR, OF WINNIPEG, MANITOBA, CANADA.

FOLDING CHAIR.

Application filed December 7, 1925, Serial No. 73,794, and in Canada September 22, 1925.

The invention relates to improvements in folding chairs and an object of the invention is to provide an improved folding chair of such a nature and design as to be unsusceptible of ready forward tipping so that one may sit or stand on any part of the seat with perfect safety.

A further object is to provide an improved folding chair in which the various parts are so connected that the chair may be quickly folded by simply lifting up the forward edge of the chair sea A further object is to provide an improved folding chair which when folded has all the remaining partsthereof located between the outer legs, that is to say, a chair which when folded has all the parts contained within a single plane.

3 A further object is to provide a folding chair which will beextremely simple, durable,

efficient in operation andinexpensive to manufacture.

A further object is to provide a chair having the lower ends of the legs well spread and the back thereof when in use, inclined at a comfortable angle for the user.

With theabove more important objects in view the invention consists essentially in the arrangement and construction of parts hereinafter more particularly described reference being had to the accompanying drawing, in which: p

Fig. 1 is a perspective view of the open chair.

Fig. 2 is a vertical sectional view centrally through the chair in the open position.

Fig. 3 is a view similar to'Figure 2 with the chair folded.

Fig. 4 is an enlarged detailed vertical sec' tional view at 44 Figure 2.

In the drawing like characters of reference indicate corresponding parts in the several figures.

Referring more particularly to the drawing, the chair comprises in general a pair of front legs 1 and 2, apair of rear inner legs 3 and 4, a seat 5 and a back 6.

The legs 3 and 4 are considerably shorter than the front legs and they are connected pivotally to the front legs by a cross rod 7 extending between the pairs of legs at a point somewhat above the centre of the rear legs. The legs 3 and 4 are connected by upper and lower rungs 8 and 9 and a cross bar 10 connects the upper ends of the legs 1 and 2. Crossed braces 11 and 12 are connected to the legs 1 and 2 in a location beneath the seat, these braces reinforcing the legs and the chair generally.

The seat 5 is formed from an outer rim13 bent in a U-shaped manner and having a continuous channel 14 formed centrally in the inner side thereof. A cross bar 15 extends between the rearwardly extending parallel ends of the rim and the cross bar is fitted also on the inner side with a channel 16. Wood or such like panels 17 extend between the bar 15 and the curved part of the rim, the ends of the panels being received within the channels 14 and 16 and the outer edges of the outermost panels being received within the channel 14.

The rear corners of the seat are pivotally connected to the front'legs by similar angle brackets 18, these angle brackets being connected to the legs by bolts or rivets 19 and 20 which it will be observed are located above the upper face ofthe seat. The horizontal portions of the brackets underlie the corners of the seat and are fastened to the rim and to the bar by rivets 21 and 22. The underlying portions of the brackets function accordingly to fasten the bar 15 to the rearwardly extending ends of the rim.

The upper ends of the legs 3 and 4 are pivotally connected to the sides of the seat by similar inclined side links 23 and 24 and the arrangement is such that when the legs 3 and 4 are swung forwardly as far as permitted and the seat is resting on the upper ends of such legs, it is in a horizontal position. These links serve also to fold the legs 3 and 4 within the outer legs when the seat is raised.

Between the upper ends of the legs 1 and 2 and in a location beneath the bar 10,

-I locate across rod 25 which carries pivotally a pair of comparatively long, downwardly extending, swinging arms 26 and 27 which have their lower ends provided with lengthwise extending slots 28 and 29, the slots receiving slidably short studs or pins 30 and 31 carried by the rear legs. The arms 26 and 27 are provided with offsets 32 to permit the lower ends thereof to escape past the brackets when the said arms are swung to their folded position between the legs 1 and 2. The seat back 6 is formed from a U-shaped rim, a cross bar and panels, the same'as the seat and it takes a position between the upper ends of the arms 26 and 27 and immediately underlying the rod 25. The rim of the back is attached to the rod by staples 33 and wood screws 34 pass through the side arms and into the rim. It will be observed that the lower edge of the seat back terminates above the offsets.

Assuming the chair is in the open position as best shown in Figure 1 and that'one desires to close it, this can be readily ac complished by catching the forward edge of'the seat and the cross bar 10 and drawing such parts towards one another. As the seat swings up on the pivot points 19 and 20, the links 23 and 24 pull the upper ends of the legs 3 and 4 rearwardly. This movement causes the rear ends of the legs 3 and 4 to swing forwardly and as they move ahead, the lower ends of the bars 26 vand 27 swing inwardly between the legs 1 and 2 and carry with them the chair back. The links and several pivot points are so designed that when the seat has been swung upwardly to a position between the legs 1 and 2, all the other moving parts of the chair have reached their finally folded po- I sition which is as shown best in Figure 3 where it will be seen that all the moving parts of the chair are contained within parallel planes containing the front and rear edges of the legs 1 and 2. Obviously the total thickness of the chair seat and chair back will have to be equal to or somewhat less than the width of the legs 1 and 2.

I wish it to be particularly noted that the back of the chair is inclined at a comfortable position and that the legs of the chair are well spread so that the chair is unsusceptible of ready forward tipping upon one sitting or standing on the same.

What I claim as my invention is 1. A folding chair comprising a pair of spaced, comparatively long, front legs, a pair of spaced, comparatively short, rear legs within the front legs and crossing the same and pivotally attached thereto, a seat having the rear corners thereof pivotally swung from the front legs, said seat in the extended position of the chair taking a substantially horizontal position with the front part thereof resting on the upper ends of the rear legs, similar inclined side links pivotally connecting the upper ends of the rear legs with the sides of the seat and adapted in the uplifting of the seat to cause the folding of the rear legs between the front legs, a back rest located between the upper ends of the front legs and having the upper end thereof pivotally swung from the front legs, extension arms secured to the back rest and having their lower ends slidably attached tg the rear portions of the rear legs, said arms being adapted in the movement of the rear legs to folded position to swing the back rest between the front legs.

2. A folding chair comprising spaced pairs of crossed front and rear legs pivotally connected together, the front legs being considerably longer than the rear legs, a seat, angle brackets-secured to the rear corners of the seat and pivotally attached to the front legs, the pivot points being in a location above the seat, said seat being adapted to take a horizontal position in the extended position of the chair with the front part thereof resting on the upper ends of the rear legs, a back rest located between the front legs and having the lower end thereof pivotally swung from the latter legs, side arms extending downwardly from the back rest and being slidably connected to the rear portions of the rear legs and similar inclined side links pivotally connected to the upper ends of the rear legs and to the sides of the seat, the said seat and back rest being designed such that their total thickness is less than the width of the front legs and the said side links and swinging arms being designed in the swinging of the seat into the plane of the front legs to fold the rear legs and the back rest into the plane containing the front legs,

S1gned at Winnipeg this 12th day of November, 1925.

ABRAHAM PROVISOR. 

